Science

Saturday, 22 November 2025
13 facts about tears
13 facts about tears
Multipurpose liquid
Associated with emotions, tears are a product of lacrimal glands, found in the eyes of most terrestrial vertebrates. Although their primary function i ...

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Brain
The brain generates up to 80,000 thoughts a day.
That's over 3,000 thoughts per hour.
Amber
It has been used in jewelry since 13,000 BC.
Silver
Silver is used in medicine wherever it is necessary to reduce the risk of bacterial infections (surgical instruments, dialysis devices).
Silver is also currently used in disinfectants and disinfectants, as well as preparations to prevent infection of wounds and burns.
Nicotine
Nicotine may have a therapeutic effect in patients with neurodegenerative brain diseases.
This is because nicotine affects not only acetylcholine but also other neurotransmitters, especially ...
Phobos
It is the closest orbiting moon in the Solar System.
It orbits Mars faster than it rotates, completing an orbit in 7 hours and 39 minutes.
Earth
There are over 7.8 billion people in the world.
It took humanity over 2 million years to reach a population of one billion. In 2011, there were 7 bi ...
Titan
The first probe near Titan was Voyager 1.
The flight took place on November 12th, 1980. Several photos were taken from a distance of 4,000 km, ...
NASA
In 1973 NASA launched the Skylab mission.
Its purpose was to set up the first American space station. Skylab successfully operated from May 14th, 1973 to July 11th, 1979, when it disintegrated into the atmosphere.
Milky Way
Our galaxy is surrounded by a spherical halo that extends as much as 200.000 light-years from its center.
The halo consists of old stars and globular clusters, and 90 percent of the material it contains is located within a radius of 100.000 light years from the center of the Milky Way.
Silver
Silver is a metal slightly harder than gold.
It is a very ductile and malleable metal with a shiny luster and can be easily polished.